* {
    padding: 0;
    margin: 0;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
}

ul {
    list-style: none;
    position: relative;
    bottom: 20px;
    display: flex;
    justify-content: center;
}

li {
    width: 10px;
    height: 10px;
    background: white;
    margin: 0 10px;
    border-radius: 50%;
}

li.active {
    background: skyblue;
}

img {
    width: 500px;
    height: 320px;
}